Ethyl 6-bromo-4-cyano-2-(difluoromethyl)pyridine-3-acetate
Methyl 4-bromo-3-cyano-2-(difluoromethyl)pyridine-6-acetate
5-Bromo-4-cyano-3-(difluoromethyl)pyridine-2-carbonyl chloride
3-Bromo-2-cyano-5-(difluoromethyl)pyridine-6-carbonyl chloride
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